ASUS every boot appears bios screen

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  • jasko_jacker
    Badcaps Legend
    • Oct 2014
    • 1140
    • italy
    #1

    ASUS every boot appears bios screen

    Every start, appears a bios screen.
    Asus rog G75VX, I resolved a power issue: replaced a mosfet near the power pin, drived by the ACDRV signal from
    TI BQ24735.
    During a motherboard test phase, it appears the bios screen in a few seconds.
    After reassembly the laptop:
    - first start, after a lot of time (20 sec), appears bios screen but boot override with linux pen don't work.
    - second start, after a lot of time...., bios screen, no device detected.
    Using this setting, the laptop starts with the usb pen:
    disable Secure Boot, Save and reboot, Enable CSM , after restart it boots with linux pen, BUT.
    what is the cause of this delay ? I have noticed this is a common issue in Asus laptops and in some HP for example after the use
    of a bios dump.
    It could be a problem on ec, or ? (last week I have solved a similar issue on an asus, the culprit was a resistence on RTC RESET signal, but this is not the same situation)
    I have a post card, but on asus notebook works only with jdebug port ; there is another procedure to see all bios post code ?
    Last edited by jasko_jacker; 02-11-2017, 04:44 PM.
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